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DERIVATIVE INSTRUMENTS (Effect of Derivative Instruments Designated Cash Flow Hedges on Statements of Operations) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Roll Forward]    
Balance in AOCI Beginning of Year $ (2,439)iart_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgeEffectBeforeTax $ (4,159)iart_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgeEffectBeforeTax
Amount of Gain (Loss) Recognized in AOCI- (Effective Portion) (206)us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet (110)us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet
Amount of Gain (Loss) Reclassified from AOCI into Earnings-(Effective Portion) (1,747)us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet (1,830)us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
Balance in AOCI End of Year (898)iart_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgeEffectBeforeTax (2,439)iart_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgeEffectBeforeTax
Interest (expense) | Interest rate swap    
Accumulated Other Comprehensive Income (Loss) [Roll Forward]    
Balance in AOCI Beginning of Year (2,439)iart_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgeEffectBeforeTax
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InterestExpenseMember
(4,125)iart_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgeEffectBeforeTax
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InterestExpenseMember
Amount of Gain (Loss) Recognized in AOCI- (Effective Portion) (206)us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InterestExpenseMember
(252)us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InterestExpenseMember
Amount of Gain (Loss) Reclassified from AOCI into Earnings-(Effective Portion) (1,747)us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InterestExpenseMember
(1,938)us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InterestExpenseMember
Balance in AOCI End of Year (898)iart_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgeEffectBeforeTax
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InterestExpenseMember
(2,439)iart_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgeEffectBeforeTax
/ us-gaap_DerivativeByNatureAxis
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/ us-gaap_IncomeStatementLocationAxis
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Cost of Goods Sold | Foreign Currency Forward Contracts    
Accumulated Other Comprehensive Income (Loss) [Roll Forward]    
Balance in AOCI Beginning of Year   (34)iart_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgeEffectBeforeTax
/ us-gaap_DerivativeByNatureAxis
= iart_ForeignCurrencyForwardContractMember
/ us-gaap_IncomeStatementLocationAxis
= iart_CostOfGoodsSoldMember
Amount of Gain (Loss) Recognized in AOCI- (Effective Portion)   142us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet
/ us-gaap_DerivativeByNatureAxis
= iart_ForeignCurrencyForwardContractMember
/ us-gaap_IncomeStatementLocationAxis
= iart_CostOfGoodsSoldMember
Amount of Gain (Loss) Reclassified from AOCI into Earnings-(Effective Portion)   108us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
/ us-gaap_DerivativeByNatureAxis
= iart_ForeignCurrencyForwardContractMember
/ us-gaap_IncomeStatementLocationAxis
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Balance in AOCI End of Year   $ 0iart_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgeEffectBeforeTax
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= iart_ForeignCurrencyForwardContractMember
/ us-gaap_IncomeStatementLocationAxis
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